class Student:

    def __init__(self, sid, sname, scope, scity):
        self.__sid = sid
        self.__sname = sname
        self.__scope = scope
        self.__scity = scity

    def __str__(self):
        return f"{self.__sid}\t{self.__sname}\t{self.__scope}\t{self.__scity}"

    # 封装方法
    def getSid(self):
        return self.__sid

    def setSid(self, sid):
        self.__sid = sid

    def getSname(self):
        return self.__sname

    def setSname(self, sname):
        self.__sname = sname

    def getScope(self):
        return self.__scope

    def setScope(self, scope):
        self.__scope = scope

    def getScity(self):
        return self.__scity

    def setScity(self, scity):
        self.__scity = scity